Metallizing process



Patented Mar. 6, 1928.

PATENT OFFICE.

JULIUS VON BOSSE, F LEIPZIG, GEBMAKY.

xn'rannizmc rnocnss.

Io Drawing. Application med Kay 6, 1926, Serial No. 101,258, andiaGermany Kay 27, 1925.

. atomizing process.

The process consists in that the articles to be metallizedare exposed tocathode rays in a vacuum, articles of molecular size of the metal of wiich the cathode consists being deposited on the articles to be treatedin the form of a uniform, unbroken, firmly adhering and hi hly lustrouscoating.

The materia s are exposed to radiation in a vacuum equal to a column ofmercury about nnn. high with a hightension direct or alternatingcurrent. When direct current is used, only the negative electrode, andwhen alternating current is used, both electrodes emit metal particles.

For conducting away the heat developed the electrodes are preferablyprovided with cooling means, for instance by constructing them int-heform of coiled tubes, through which water flows.-

, The electrodes neednot be made entirel of the metal to be atomized,but a galvanically gilded copper electrode,-for instance, may be used,froxuwhich the gold is then atomized.

Gold threads as hitherto made by the methods known to the art, were soexcessively thick that it was impossible or at least difiicult to usethem for normal textile purposes.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. A process of metallizing textile fibres whichconsists in submitting the fibres in :a vacuum to the action of cathoderadiation emanating from a cooled electrode.

2. The process of metallizing textile fibres with gold which, comprisessubjecting the fibres in a vacuum to the action of a cooled radiatinggold plated cathode.

In testimony whereof I aflix my signature.

DR. JULIUS v. BOSSE.

